The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1988
Filed:
Jun. 17, 1986
Applicant:
Inventors:
Takehiko Nishikawa, Aichi, JP;
Yasuo Ito, Aichi, JP;
Yoshiyuki Hisamatsu, Aichi, JP;
Naoki Tani, Aichi, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
234-1 ; 234 97 ; 234 98 ; 83 13 ; 83687 ; 83691 ;
Abstract
A method and apparatus for press-cutting selected patterns in a workpiece. The apparatus includes a plurality of dies and at least one punch element associated with each die. A plurality of backing plates are provided to drive the punch elements against the workpiece when the backing plates are positioned in the operative position. A press-cutting pattern selector selectively positions the backing plates in the operative position or an inoperative position depending upon the pattern to be press-cut.